Can't Receive Calls With Cm12.1 Nightlies

I can make calls, register on the network, send and receive sms. Everything works, except receiving calls. I can only receive calls with stock firmware:
2015-08-01 Spint (cdma) 5.0 G900PVPU3BOG1 G900PSPT3BOG1

Does anyone know why???
Is there anything I can try?

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